/*
 *
 * This file is part of QMapControl,
 * an open-source cross-platform map widget
 *
 * Copyright (C) 2007 - 2008 Kai Winter
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with QMapControl. If not, see <http://www.gnu.org/licenses/>.
 *
 * Contact e-mail: kaiwinter@gmx.de
 * Program URL   : http://qmapcontrol.sourceforge.net/
 *
 */

#ifndef TILEMAPADAPTER_H
#define TILEMAPADAPTER_H

#include "qmapcontrol_global.h"
#include "mapadapter.h"

namespace qmapcontrol
{
//! MapAdapter for servers with image tiles
/*!
 * Use this derived MapAdapter to display maps from OpenStreetMap
 *	@author Kai Winter <kaiwinter@gmx.de>
 */
class QMAPCONTROL_EXPORT TileMapAdapter : public MapAdapter
{
    Q_OBJECT
public:
    //! constructor
    /*!
     * Sample of a correct initialization of a MapAdapter:<br/>
     * TileMapAdapter* ta = new TileMapAdapter("192.168.8.1",
     * "/img/img_cache.php/%1/%2/%3.png", 256, 0,17);<br/> The placeholders %1, %2, %3
     * stands for x, y, z<br/> The minZoom is 0 (means the whole world is visible). The
     * maxZoom is 17 (means it is zoomed in to the max)
     * @param host The servers URL
     * @param serverPath The path to the tiles with placeholders
     * @param tilesize the size of the tiles
     * @param minZoom the minimum zoom level
     * @param maxZoom the maximum zoom level
     */
    TileMapAdapter(const QString &host, const QString &serverPath, int tilesize,
                   int minZoom = 0, int maxZoom = 17);

    virtual ~TileMapAdapter();

    virtual QPoint coordinateToDisplay(const QPointF &) const;
    virtual QPointF displayToCoordinate(const QPoint &) const;

    qreal PI;

protected:
    qreal rad_deg(qreal) const;
    qreal deg_rad(qreal) const;

    virtual bool isTileValid(int x, int y, int z) const;
    virtual void zoom_in();
    virtual void zoom_out();
    virtual QString query(int x, int y, int z) const;
    virtual int tilesonzoomlevel(int zoomlevel) const;
    virtual int xoffset(int x) const;
    virtual int yoffset(int y) const;
};
}
#endif
